Caster.



B. M. 'WILK'ERSON UASTEB.. APPLIUATION FILED 11,111.17, 1910.

Patented Feb. 14, 1911.

I van for joel- UNITED STATES PATENT OFFICE.

BERRA IVI. WILKERSON, OF ROSWELL, TERRITORY OF NEW MEXICO, ASSIGNOR TO I.. B. TANNEHILL AND W. C. REID, OF ROSWELL, TERRITORY OF NEW MEXICO.

CASTER.

Specification of Letters Patent.

Patented Feb. 14:, 1911.

Application filed March 17, 1910. Serial No. 550,072.

4-To all 'whom if may concern:

is so arranged that the easter can be freely moved in any direction.

'V ith the above and other objects in view the invention contemplates forming the easter of a sectional body, the sections thereof being complemental so that they can be readily assembled and each section recessed to provide chambers for an anti-friction bearing and a roller when the sections are assembled.

In carrying out the objects of the invention generally stated above it will be understood, of course, that the essential features thereof, are necessarily susceptible of changes in details and structural arrangements, one preferred and practical embodiment of which is shown in the accompanying drawings, wherein Figure 1 is a view in elevation of the improved easter. Fig. 2 is a horizontal sectional view of the same taken on the line 2-2, Fig. 1, viewed in the direction of the arrow. Fig. 3 is a central vertical sectional View. Fig. 4 is a view in elevation, showing the sections partly separated.

Referring to the accompanying drawings by numerals, it will be seen that the improved caster is composed of two complemental sections 1 and 2. Section 1 is provided with an enlarged body 3 from the upper portion of which a shank member 4; projects, said shank member is provided adjacent the upper end with a holding groove Said body and shank are preferably integral and each being semi-cylindrical in contour so that they present a continuous flat surface at one side. At the center of the said flat surface, the body 3 is provided with an upper semi-spherical recess 6 and beneath the same the bottom of the body and a portion of said flat surface are cut away to provide an enlarged recess 7 that communicates with the smaller recess 6. At

the lower portion of the flat surface of body 1, a semicircular flange 8 projects laterally therefrom and forms a scat for the base of the section 2.

Section 2 is provided with a body 9 and shank member 10 which are complemental to the similar parts of section 1. The shank member 10 is provided with an upper groove 11 that is a continuation of the similar groove of shank member t of section 1 when sections 1 and 2 are assembled. Said section 2 is provided with an upper recess 12 and a lower recess 13 in its flat surface, and said recesses form with the similar recess of section 1 an upper chamber for the anti-frictimi bearing let and a lower chams ber for the supporting roller 15. Said roller 15 is preferably a ball of hardened steel and projects beyond the base of the sectional body of the caster and is in anti-frictional contact with the bearing 14. The bottom of the section 2 at the outer edge thereof is provided with a. groove 16 which receives the flange 8 of section 1 when the two scctions are assembled to hold the lower pori tions of the sections in close contact.

A split resilient ring 17 is fitted over the shank members of the two sections 1 and 2 and seated in the grooves therein to hold the upper portions of the sections in close contact.

lith this invention it will be seen that the sections can be readily separated by removing the ring 17 from the shank members and lifting section 2 from the flange of section 1. The separation of the sections releases the bearing and the roller, so that a new bearing and roller can be provided when necessary or desirable. It will also be seen that by using a ball roller, the caster can be freely moved in any direction.

that I claim as my invention is 1. A caster comprising a sectional body, each section provided with a shank member and being complementally recessed to provide an upper bearing chamber and a lower roller chamber, one section provided with a grooved bottom, the other section provided with a flange for engaging said grooved bottom, an anti-friction bearing for the bearing chamber, a roller for the roller chamber, and means for fastening the shank members together.

2. A caster comprising a body formed of two complemental sections, one section pro- 4f. A caster comprising a pair of comple mental sections provided With a body and a shank member, said shank members provided With grooves, a split spring ring engaging said grooves to hold said shank members together, means for holding the said bodies together, and a roller held between said bodies.

BERRA M. VILKERSON.

Witnesses LIsLE B. TANNEHILL, JAMES M. OBRIEN. 

